45 lines
1.3 KiB
Plaintext
45 lines
1.3 KiB
Plaintext
= Inductor =
|
|
|
|
An Inductor is a component that stores energy in a magnetic field. It does this
|
|
by using a current flowing through a coil of wire, often around a magnet.
|
|
Inductance is measured in Henery's (H)
|
|
|
|
Inductors are resistant to changes in current, and therefore can be used to
|
|
smooth out sudden changes. They also cause AC signals voltage and current to
|
|
get out of sync.
|
|
|
|
Inductors can wirelessly couple if their coils are placed in the same plane,
|
|
due to the induced magnetic field. This may cause currents to generate in
|
|
issolated coils if their fields are aligned.
|
|
|
|
== Types ==
|
|
|
|
Different types of inductors lend themselves to different applications.
|
|
|
|
* Laminated iron core
|
|
* dc and ac power filtering
|
|
* Powdered iron solenoid
|
|
* power supplies, RF chokes, audio and low-freq radio circuits
|
|
* Powered iron and ferrite fotorids
|
|
* audio and radio circuits
|
|
* air core
|
|
* RF transmitters
|
|
|
|
== Parallel and Series ==
|
|
|
|
When in series, the total inductors value is added together.
|
|
|
|
When in parallel, the total inductance is equal to the reciprical of the sum of
|
|
recipricals. This means that for three inductors L1 L2 and L3, the total
|
|
inductance of them in parallel is
|
|
|
|
Total = 1/(1/L1 + 1/L2 + 1/L3)
|
|
|
|
== Reactance ==
|
|
|
|
See [[Impedance#Inductors]]
|
|
|
|
== Also see ==
|
|
|
|
[[Transformers]]
|